| Autor | Títulos | | 1.
| Willem Kooning Foundation (Nova Iorque, Estados Unidos) | 1 | | 2.
| Willem-Alexander, Príncipe da Holanda, 1967- | 1 | | 3.
| Willems | 1 | | 4.
| Willems, Alphonse | 1 | | 5.
| Willems, Edgar | 1 | | 6.
| Willems, Paul | 1 | | 7.
| Willems, Roger | 7 | | 8.
| Willems, Roger, 1969- | 6 | | 9.
| Willemse, David | 3 | | 10.
| Willemsen, August | 3 |
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